Rev. 07/26/02 SP385E-1 True +3V to +5V RS-232 Line Driver/Receiver Copyright 2001 Sipex Corporation
1
SP385E-1
Operates from 3.3V or 5V Power Supply
Meets True EIA/TIA-232-F Standards
from a +3.0V to +5.5V Power Supply
Meets EIA-562 Specifications at V
CC
2.7V
Two Drivers and Receivers
Operates with 0.1
F Capacitors
High Data Rate -- 120kbps Under Load
Low Power Shutdown
1
A
3-State TTL/CMOS Receiver Outputs
Low Power CMOS -- <1mA Operation
Improved ESD Specifications:
+15kV Human Body Model
+15kV IEC1000-4-2 Air Discharge
+8kV IEC1000-4-2 Contact Discharge
DESCRIPTION
The Sipex SP385E-1 is an enhanced version of the Sipex SP200 family of RS232 line
drivers/receivers. The SP385E-1 offers +3.3V operation for EIA-562 and EIA-232 applica-
tions. The SP385E-1 maintains the same performance features offered in its predecessors.
The SP385E-1 is available in plastic SOIC or SSOP packages operating over the commercial
and industrial temperature ranges. The SP385E-1 is pin compatible to the LTC1385 EIA-562
transceiver, except the drivers in the SP385E-1 can only be disabled with the ON/OFF pin.
True +3V or +5V RS-232 Line Driver/Receiver
R
2
R
1
T
2
T
1
TTL/CMOS INPUTS
RS232 OUTPUTS
TTL/CMOS OUTPUTS
RS232 INPUTS
Charge
Pumps
Rev. 07/26/02 SP385E-1 True +3V to +5V RS-232 Line Driver/Receiver Copyright 2002 Sipex Corporation
2
SPECIFICATIONS
V
CC
= +3.3V
10%; cap on (V
+
) and (V
-
) = 1.0
F, C1 = C2 = 0.1
F; T
MIN
to T
MAX
unless otherwise noted.
PARAMETERS
MIN.
TYP.
MAX.
UNITS
CONDITIONS
TTL INPUT
Logic Threshold
Low
0.8
Volts
T
IN
; ON/OFF Vcc = 3.3V
High
2.0
Volts
T
IN
; ON/OFF Vcc = 3.3V
Logic Pullup Current
0.01
200
A
T
IN
= 0V
Maximum Data Rate
120
kbps
C
L
= 2500pF, R
L
= 3k
TTL OUTPUT
TTL/CMOS Output
Voltage, Low
0.4
Volts
I
OUT
= 1.6mA; Vcc = 3.3V
Voltage, High
V
CC
-0.6
Volts
I
OUT
= -1.0mA
Leakage Current; T
A
= +25
C
0.05
10
A
ON/OFF=0V, 0
V
OUT
V
CC
EIA-562 OUTPUT
Output Voltage Swing
3.7
4.2
Volts
All transmitter outputs loaded
with 3k
to ground
Power-Off Output Resistance
300
V
CC
= 0V; V
OUT
=
2V
Output Short Circuit Current
35
mA
Infinite duration
EIA-562 INPUT
Voltage Range
-15
+15
Volts
Voltage Threshold
Low
0.6
1.2
Volts
V
CC
= 3.3V, T
A
= +25
C
High
1.5
2.4
Volts
V
CC
= 3.3V, T
A
= +25
C
Hysteresis
0.5
1.0
Volts
V
CC
= 3.3V, T
A
= +25
C
Resistance
3
5
7
k
V
IN
= 15V to 15V
DYNAMIC CHARACTERISTICS
Driver Propagation Delay
1.0
s
TTL to RS-562
Receiver Propagation Delay
0.3
s
RS-562 to TTL
Instantaneous Slew Rate
30
V/
s
C
L
= 10pF, R
L
= 3k
- 7k
;
T
A
= +25
C
Transition Region Slew Rate
10
V/
s
C
L
= 2500pF, R
L
= 3k
;
measured from +2V to -2V
or -2V to +2V
Output Enable Time
200
ns
Output Disable Time
200
ns
POWER REQUIREMENTS
V
CC
Power Supply Current
0.5
6
mA
No load, T
A
= +25
C;
V
CC
= 3.3V
8
mA
All transmitters R
L
= 3k
T
A
= +25
C
Shutdown Supply Current
0.010
5
A
V
CC
= 3.3V, T
A
= +25
C
ABSOLUTE MAXIMUM RATINGS
This is a stress rating only and functional operation of the device at
these or any other conditions above those indicated in the operation
sections of this specification is not implied. Exposure to absolute
maximum rating conditions for extended periods of time may affect
reliability.
V
cc
.................................................................................................................................................................
+6V
V
+
....................................................................................................................
(Vcc-0.3V) to +13.2V
V
-
..............................................................................................................................................................
13.2V
Input Voltages
T
IN
.........................................................................................................................
-0.3 to (Vcc +0.3V)
R
IN
............................................................................................................................................................
15V
Output Voltages
T
OUT
....................................................................................................
(V+, +0.3V) to (V-, -0.3V)
R
OUT
................................................................................................................
-0.3V to (Vcc +0.3V)
Short Circuit Duration
T
OUT
.........................................................................................................................................
Continuous
Power Dissipation
CERDIP .............................................................................. 675mW
(derate 9.5mW/
C above +70
C)
Plastic DIP .......................................................................... 375mW
(derate 7mW/
C above +70
C)
Small Outline ...................................................................... 375mW
(derate 7mW/
C above +70
C)
Rev. 07/26/02 SP385E-1 True +3V to +5V RS-232 Line Driver/Receiver Copyright 2001 Sipex Corporation
3
SPECIFICATIONS
V
CC
= +3.3V
10%; cap on (V
+
) and (V
-
) = 1.0
F, C1 = C2 = 0.1
F; T
MIN
to T
MAX
unless otherwise noted.
PARAMETERS
MIN.
TYP.
MAX.
UNITS
CONDITIONS
TTL INPUT
Logic Threshold
Low
0.8
Volts
T
IN
; ON/OFF
High
2.4
Volts
T
IN
; ON/OFF
Logic Pullup Current
0.01
200
A
T
IN
= 0V
Maximum Data Rate
120
kbps
C
L
= 2500pF, R
L
= 3k
TTL OUTPUT
TTL/CMOS Output
Voltage, Low
0.4
Volts
I
OUT
= 1.6mA; Vcc = +5V
Voltage, High
V
CC
-0.6
Volts
I
OUT
= -1.0mA
Leakage Current; T
A
= +25
C
0.05
10
A
EN = V
CC
, 0V
V
OUT
V
CC
EIA-232 OUTPUT
Output Voltage Swing
5
9
Volts
All transmitter outputs loaded
with 3k
to ground.
Power-Off Output Resistance
300
V
CC
= 0V; V
OUT
=
2V
Output Short Circuit Current
35
mA
Infinite duration
EIA-562 INPUT
Voltage Range
-15
+15
Volts
Voltage Threshold
Low
0.8
1.5
Volts
V
CC
= 5V, T
A
= +25
C
High
1.8
2.4
Volts
V
CC
= 5V, T
A
= +25
C
Hysteresis
0.5
1.0
Volts
V
CC
= 5V, T
A
= +25
C
Resistance
3
5
7
k
V
IN
= 15V to 15V
DYNAMIC CHARACTERISTICS
Propagation Delay, RS-232 to TTL
1
s
TTL to RS-562
Instantaneous Slew Rate
30
V/
s
C
L
= 10pF, R
L
= 3k
- 7k
;
T
A
=+25
C
Transition Region Slew Rate
10
V/
s
C
L
= 2500pF, R
L
= 3k
;
measured from +3V to -3V
or -3V to +3V
Output Enable Time
200
ns
Output Disable Time
200
ns
POWER REQUIREMENTS
V
CC
Power Supply Current
0.5
15
mA
No load,
T
A
= +25
C; V
CC
= 5V
25
mA
All transmitters R
L
= 3k
;
T
A
= +25
C
Shutdown Supply Current
1
10
A
V
CC
= 5V, T
A
= +25
C
PERFORMANCE CURVES
0
5
10
15
20
Load Current (mA)
0
6
8
10
12
V+ (V
olts)
2
4
25
30
35
40
V
CC
= 4V
V
CC
= 5V
-55
-40
0
25
70
85
125
Temperature (
C)
0
5
10
15
20
25
30
I
CC
(mA)
V
CC
= 5V
V
CC
= 4V
V
CC
= 3V
4.5
4.75
5.0
5.25
5.5
V
CC
(Volts)
6.8
7.4
7.6
7.8
8.0
8.2
8.4
V
OH
(V
olts)
7.0
7.2
Load current = 0mA
T
A
= 25
C
0
2
4
6
8
10
12
14
Load Current (mA)
V V
oltage (V
olts)
-3
-4
-5
-6
-7
-8
-9
-10
-11
V
CC
= 5V
V
CC
= 4V
Rev. 07/26/02 SP385E-1 True +3V to +5V RS-232 Line Driver/Receiver Copyright 2002 Sipex Corporation
4
PINOUT
TYPICAL OPERATING CIRCUIT
18-pin SOIC
20-pin SSOP
ON/OFF
V
GND
T OUT
R IN
R OUT
T IN
T IN
R OUT
N/C
C +
V+
C -
C +
C -
V-
T OUT
R IN
2
1
CC
2
1
1
1
1
2
3
4
6
7
8
5
9
18
17
16
15
13
12
11
14
10
1
1
2
2
2
2
ON/OFF
V
GND
T OUT
R IN
R OUT
T IN
T IN
R OUT
N/C
N/C
C +
V+
C -
C +
C -
V-
T OUT
R IN
N/C
1
2
3
4
5
6
7
8
9
10
20
19
18
17
16
15
14
13
12
11
1
1
CC
2
2
2
1
2
2
1
1
1
2
R
2
10
9
R IN
R OUT
2
R
1
13
14
R IN
R OUT
1
T
2
11
8
T OUT
2
T
1
12
15
T OUT
1
16
400k
400k
TTL/CMOS
INPUTS
RS232
OUTPUTS
4
2
C
+
7
17
V
V+
+
+
0.1
F
6.3V
+5V INPUT
3
TTL/CMOS
OUTPUTS
RS232
INPUTS
2
1
5k
0.1
F
16V
5k
6
5
C
+
+
0.1
F
16V
+5V to +10V
Voltage Doubler
0.1
F
SP385E-1
+
18
ON/OFF
+
0.1
F
16V
SOIC Package
+10V to -10V
Voltage Inverter
V-
T IN
2
T IN
1
GND
R
2
12
9
R IN
R OUT
2
R
1
15
16
R IN
R OUT
1
T
2
13
8
T IN
2
T OUT
2
T
1
14
17
T IN
1
T OUT
1
18
GND
400k
400k
TTL/CMOS
INPUTS
RS232
OUTPUTS
4
2
C
+
7
19
Vcc
V
+
+
0.1
F
6.3V
+5V to +10V
Voltage
Doubler
+5V INPUT
3
V
TTL/CMOS
OUTPUTS
RS232
INPUTS
2
1
5k
0.1
F
16V
5k
6
5
C
+
+
0.1
F
16V
+10V to -10V
Voltage
Inverter
0.1
F
SP385E-1
+
20
ON/OFF
+
0.1
F
16V
SSOP Package
Rev. 07/26/02 SP385E-1 True +3V to +5V RS-232 Line Driver/Receiver Copyright 2001 Sipex Corporation
5
FEATURES...
The Sipex SP385E-1 is a +3V to +5V EIA-232/
EIA-562 line transceiver. It is a pin-for-pin
alternative for the SP310A and will operate in
the same socket with 0.1
F capacitors, either
polarized or nonpolarized, in +3V supplies.
The SP385E-1 offers the same features such as
120kbps guaranteed transmission rate, increased
drive current for longer and more flexible cable
configurations, low power dissipation and
overall ruggedized construction for commercial
and industrial environments. The SP385E-1
also includes a shutdown feature that tri-states
the drivers and the receivers.
The SP385E-1 includes a charge pump voltage
converter which allows it to operate from a single
+3.3V or +5V supply. These converters double the
V
CC
voltage input in order to generate the EIA-232
or EIA-562 output levels. For +5V operation, the
SP385E-1 driver outputs adhere to all EIA-232-F
and CCITT V.28 specifications. While at +3.3V
operation, the outputs adhere to EIA-562 specifica-
tions. Due to Sipex's efficient charge pump design,
the charge pump levels and the driver outputs are
less noisy than other 3V EIA-232 transceivers.
The SP385E-1 has a single control line which
simultaneously shuts down the internal DC/DC
converter and puts all transmitter and receiver
outputs into a high impedance state.
The SP385E-1 is available in 18-pin plastic
SOIC and 20-pin plastic SSOP packages for
operation over commercial and industrial
temperature ranges. Please consult the factory
for surface-mount packaged parts supplied on
tape-on-reel as well as parts screened to MIL-
M-38510.
The SP385E-1 is ideal for +3.3V battery
applications requiring low power operation.
The charge pump strength allows the drivers
to provide
4.0V signals, plenty for typical
EIA-562 applications since the EIA-562
receivers have input sensitivity levels of less
than
3V.
THEORY OF OPERATION
The SP385E-1 device is made up of three basic
circuit blocks -- 1) a driver/transmitter, 2) a
receiver and 3) a charge pump.
Driver/Transmitter
The drivers are inverting level transmitters, that
convert TTL or CMOS logic levels to
5.0V
EIA/TIA-232 levels inverted relative to the
input logic levels. Typically the RS-232 output
voltage swing is
5.5V with no load and at least
5V minimum fully loaded. The driver outputs
are protected against infinite short-circuits to
ground without degradation in reliability. Driver
outputs will meet EIA/TIA-562 levels of
3.7V
with supply voltages as low as 2.7V.
The instantaneous slew rate of the transmitter
output is internally limited to a maximum of
30V/
s in order to meet the standards [EIA 232-
D 2.1.7, Paragraph (5)]. However, the transition
region slew rate of these enhanced products is
typically 10V/
s. The smooth transition of the
loaded output from V
OL
to V
OH
clearly meets
the monotonicity requirements of the standard
[EIA 232-D 2.1.7, Paragraphs (1) & (2)].
Receivers
The receivers convert RS-232 input signals to
inverted TTL signals. Since the input is usually
from a transmission line, where long cable
lengths and system interference can degrade the
signal, the inputs have a typical hysteresis
margin of 500mV. This ensures that the receiver
is virtually immune to noisy transmission lines.
The input thresholds are 0.8V minimum and
2.4V maximum, again well within the
3V RS-
232 requirements. The receiver inputs are also
protected against voltages up to
15V. Should
an input be left unconnected, a 5k
pull-down
resistor to ground will commit the output of the
receiver to a high state.
In actual system applications, it is quite possible
for signals to be applied to the receiver inputs
before power is applied to the receiver circuitry.
This occurs for example when a PC user
attempts to print only to realize the printer
wasn't turned on. In this case an RS-232 signal
from the PC will appear on the receiver input at
the printer. When the printer power is turned on,
the receiver will operate normally. All of these
enhanced devices are fully protected.
Rev. 07/26/02 SP385E-1 True +3V to +5V RS-232 Line Driver/Receiver Copyright 2002 Sipex Corporation
6
CHARGE PUMP
The charge pump is a Sipexpatented design
(5,306,954) and uses a unique approach
compared to older lessefficient designs. The
charge pump still requires four external
capacitors, but uses a fourphase voltage
shifting technique to attain symmetrical 10V
power supplies. There is a freerunning
oscillator that controls the four phases of the
voltage shifting. A description of each phase
follows.
Phase 1
-- V
SS
charge storage --During this phase of
the clock cycle, the positive side of capacitors
C
1
and C
2
are initially charged to +5V. C
l
+
is
then switched to ground and the charge in C
1
is transferred to C
2
. Since C
2
+
is connected to
+5V, the voltage potential across capacitor C
2
is now 10V.
Phase 2
-- V
SS
transfer -- Phase two of the clock
connects the negative terminal of C
2
to the
V
SS
storage capacitor and the positive
terminal of C
2
to ground, and transfers the
generated l0V to C
3
. Simultaneously, the
positive side of capacitor C
1
is switched to
+5V and the negative side is connected to
ground.
Phase 3
-- V
DD
charge storage -- The third phase of
the clock is identical to the first phase -- the
charge transferred in C
1
produces 5V in the
negative terminal of C
1
, which is applied to
the negative side of capacitor C
2
. Since C
2
+
is
at +5V, the voltage potential across C
2
is l0V.
Phase 4
-- V
DD
transfer -- The fourth phase of the
clock connects the negative terminal of C
2
to
ground,
and transfers the generated l0V across C
2
to
C
4
, the V
DD
storage capacitor. Again, simulta-
neously
with this, the positive side of capacitor C
1
is
switched to +5V and the negative side is
connected to ground, and the cycle begins
again.
Since both V
+
and V
are separately generated
from V
CC
; in a noload condition V
+
and V
will
be symmetrical. Older charge pump ap-
proaches that generate V
from V
+
will show
a decrease in the magnitude of V
compared
to V
+
due to the inherent inefficiencies in the
design.
The clock rate for the charge pump typically
operates at 15kHz. The external capacitors
can be as low as 0.1
F with a 16V breakdown
voltage rating.
Figure 1. Charge Pump -- Phase 1
Figure 2. Charge Pump -- Phase 2
Figure 3. Charge Pump Waveforms
10V
GND
GND
-10V
V
CC
= +5V
5V
5V
+5V
V
SS
Storage Capacitor
V
DD
Storage Capacitor
C
1
C
2
C
3
C
4
+
+
+
+
V
CC
= +5V
10V
V
SS
Storage Capacitor
V
DD
Storage Capacitor
C
1
C
2
C
3
C
4
+
+
+
+
C2+
C2-
Rev. 07/26/02 SP385E-1 True +3V to +5V RS-232 Line Driver/Receiver Copyright 2001 Sipex Corporation
7
Shutdown (ON/OFF)
The SP385E-1 has a shut-down/standby mode
to conserve power in battery-powered
systems. To activate the shutdown mode,
which stops the operation of the charge pump,
a logic "0" is applied to the appropriate
control line. The shutdown mode is controlled
on the SP385E-1 by a logic "0" on the ON/
OFF control line (pin 18 for the SOIC and pin
20 for the SSOP packages); this puts the
transmitter outputs in a tri-state mode.
ESD Tolerance
The SP385E-1 device incorporates rugge-
dized ESD cells on all driver output and
receiver input pins. The ESD structure is
improved over our previous family for more
rugged applications and environments
sensitive to electro-static
discharges and associated transients. The
improved ESD tolerance is at least
15KV
without damage nor latch-up.
There are different methods of ESD testing
applied:
a) MIL-STD-883, Method 3015.7
b) IEC1000-4-2 Air-Discharge
c) IEC1000-4-2 Direct Contact
The Human Body Model has been the
generally accepted ESD testing method for
semiconductors. This method is also specified
in MIL-STD-883, Method 3015.7 for ESD
testing. The premise of this ESD test is to
simulate the human body's potential to store
electro-static energy and discharge it to an
integrated circuit. The simulation is
performed by using a test model as shown in
Figure 6. This method will test the IC's
capability to withstand an ESD transient
during normal handling such as in
manufacturing areas where the ICs tend to be
handled frequently.
The IEC-1000-4-2, formerly IEC801-2, is
generally used for testing ESD on equipment
and systems. For system manufacturers, they
must guarantee a certain amount of ESD
protection since the system itself is exposed to
the outside environment and human presence.
The premise with IEC1000-4-2 is that the
system is required to withstand an amount of
static electricity when ESD is applied to points
and surfaces of the equipment that are
accessible to personnel during normal usage.
The transceiver IC receives most of the ESD
current when the ESD source is applied to the
connector pins. The test circuit for IEC1000-
4-2 is shown on Figure 7. There are two
methods within IEC1000-4-2, the Air
Discharge method and the Contact Discharge
method.
Figure 4. Charge Pump -- Phase 3
V
CC
= +5V
5V
+5V
5V
V
SS
Storage Capacitor
V
DD
Storage Capacitor
C
1
C
2
C
3
C
4
+
+
+
+
Figure 5. Charge Pump -- Phase 4
V
CC
= +5V
+10V
V
SS
Storage Capacitor
V
DD
Storage Capacitor
C
1
C
2
C
3
C
4
+
+
+
+
Figure 6. ESD Test Circuit for Human Body Model
R
C
C
S
R
S
SW1
SW2
R
C
Device
Under
Test
DC Power
Source
C
S
R
S
SW1
SW2
Figure 7. ESD Test Circuit for IEC1000-4-2
RS and RV add up to 330
add up to 330
for IEC1000-4-2.
or IEC1000-4-2.
RS and RV add up to 330
for IEC1000-4-2.
Contact-Discharge Module
R
V
R
C
C
S
R
S
SW1
SW2
R
C
Device
Under
Test
DC Power
Source
C
S
R
S
SW1
SW2
R
V
Contact-Discharge Module
Rev. 07/26/02 SP385E-1 True +3V to +5V RS-232 Line Driver/Receiver Copyright 2002 Sipex Corporation
8
With the Air Discharge Method, an ESD
voltage is applied to the equipment under test
(EUT) through air. This simulates an
electrically charged person ready to connect a
cable onto the rear of the system only to find
an unpleasant zap just before the person
touches the back panel. The high energy
potential on the person discharges through an
arcing path to the rear panel of the system
before he or she even touches the system.
This energy, whether discharged directly or
through air, is predominantly a function of the
discharge current rather than the discharge
voltage. Variables with an air discharge such
as approach speed of the object carrying the
ESD potential to the system and humidity will
tend to change the discharge current. For
example, the rise time of the discharge current
varies with the approach speed.
The Contact Discharge Method applies the
ESD current directly to the EUT. This method
was devised to reduce the unpredictability of
the ESD arc. The discharge current rise time
is constant since the energy is directly
transferred without the air-gap arc. In
situations such as hand held systems, the ESD
charge can be directly discharged to the
equipment from a person already holding the
equipment. The current is transferred on to
the keypad or the serial port of the equipment
directly and then travels through the PCB and
finally to the IC.
The circuit models in Figures 6 and 7
represent the typical ESD testing circuit used
for all three methods. The C
S
is initially
charged with the DC power supply when the
first switch (SW1) is on. Now that the
capacitor is charged, the second switch (SW2)
is on while SW1 switches off. The voltage
stored in the capacitor is then applied through
R
S
, the current limiting resistor, onto the
device under test (DUT). In ESD tests, the
SW2 switch is pulsed so that the device under
test receives a duration of voltage.
For the Human Body Model, the current
limiting resistor (R
S
) and the source capacitor
(C
S
) are 1.5k
an 100pF, respectively. For
IEC-1000-4-2, the current limiting resistor
(R
S
) and the source capacitor (C
S
) are 330
an
150pF, respectively.
The higher C
S
value and lower R
S
value in the
IEC1000-4-2 model are more stringent than
the Human Body Model. The larger storage
capacitor injects a higher voltage to the test
point when SW2 is switched on. The lower
current limiting resistor increases the current
charge onto the test point.
SP385E-1
HUMAN BODY
IEC1000-4-2
Family
MODEL Air Discharge Direct Contact Level
Driver Outputs
15kV
15kV
8kV
4
Receiver Inputs
15kV
15kV
8kV
4
30A
15A
0A
0ns
30ns
Figure 8. ESD Test Waveform for IEC1000-4-2
Table 1. Transceiver ESD Tolerance Levels
Rev. 07/26/02 SP385E-1 True +3V to +5V RS-232 Line Driver/Receiver Copyright 2001 Sipex Corporation
9
D
E
H
PACKAGE: PLASTIC
SMALL OUTLINE (SOIC)
(WIDE)
DIMENSIONS (Inches)
Minimum/Maximum
(mm)
A
A1
L
B
e
A
A1
B
D
E
e
H
L
18PIN
0.090/0.104
(2.29/2.649))
0.004/0.012
(0.102/0.300)
0.013/0.020
(0.330/0.508)
0.447/0.463
(11.35/11.74)
0.291/0.299
(7.402/7.600)
0.050 BSC
(1.270 BSC)
0.394/0.419
(10.00/10.64)
0.016/0.050
(0.406/1.270)
0
/8
(0
/8
)
Rev. 07/26/02 SP385E-1 True +3V to +5V RS-232 Line Driver/Receiver Copyright 2002 Sipex Corporation
10
D
E
H
PACKAGE: PLASTIC SHRINK
SMALL OUTLINE
(SSOP)
DIMENSIONS (Inches)
Minimum/Maximum
(mm)
20PIN
A
A1
L
B
e
A
A1
B
D
E
e
H
L
0.068/0.078
(1.73/1.99)
0.002/0.008
(0.05/0.21)
0.010/0.015
(0.25/0.38)
0.278/0.289
(7.07/7.33)
0.205/0.212
(5.20/5.38)
0.0256 BSC
(0.65 BSC)
0.301/0.311
(7.65/7.90)
0.022/0.037
(0.55/0.95)
0
/8
(0
/8
)
Rev. 07/26/02 SP385E-1 True +3V to +5V RS-232 Line Driver/Receiver Copyright 2001 Sipex Corporation
11
ORDERING INFORMATION
Part Number
Temperature Range
Package
SP385E-1CA ........................................... 0
C to +70
C .......................................... 20pin SSOP
SP385E-1EA .......................................... 40
C to +85
C ........................................ 20pin SSOP
SP385E-1CT ............................................ 0
C to +70
C ........................................... 18pin SOIC
SP385E-1ET .......................................... 40
C to +85
C ......................................... 18pin SOIC
CT and ET packages available TapeonReel. Please consult the factory for pricing and availability for this option, and for parts screened to
MILSTD883.
Corporation
SIGNAL PROCESSING EXCELLENCE
Sipex Corporation reserves the right to make changes to any products described herein. Sipex does not assume any liability arising out of the
application or use of any product or circuit described herein; neither does it convey any license under its patent rights nor the rights of others.
Sipex Corporation
Headquarters and
Sales Office
22 Linnell Circle
Billerica, MA 01821
TEL: (978) 667-8700
FAX: (978) 670-9001
e-mail: sales@sipex.com
Sales Office
233 South Hillview Drive
Milpitas, CA 95035
TEL: (408) 934-7500
FAX: (408) 935-7600
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